by Sophie Mignon and Charlotte van Ouwerkerk ROTTERDAM, Netherlands (AFP) — Dutch police are investigating possible terror links after arresting a Spaniard driving a van containing gas canisters close to a rock concert which was abruptly cancelled over fears of an attack. The man “was arrested and taken to the police station,” Rotterdam police said in a Tweet, following a tip-off from Spanish authorities. The arrest came little under a week after twin car-bomb attacks […]